Tongs for handling glass-pots.



J. B. KAPTEINA. TONGS FOR HANDLINGGLASS POTS. APPLIOATIONIILBD MAR.31,1913.

Patented Dec. 15, 1914.

FIG.3

INVENTOR WWW "HE NORRIS PETERS CQ. PHOTO-LITHQ. WASHINGTON, n. r

and arrangement "of" parts NITED STATES PATENT, OFFICE. v; g

JOHN E. KAPTEINA, or SPRINGDALE, PENNSYLVANIA) roNGs ron HANDLING GLASS-POTS.

To all whom itmay concern:

Be it known that I, JoI-IN a resident of Springdale, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Tongs for Handling GlassPots, of which the following is a specification.

This invention relates to tongs for handling and transporting glassipots, such as are used for making plateglass.

The object of. the inventlon is to provide a pair of tongs whichwillfirmly secure and hold the pot, and by means of which it may be lifted and transported from place to place, glass, without liability of the pot escaping from the tongs, and also whereby the pot may be dipped into andfilled or partly filled from a mass ofm'olten glass without submerging the tongs therein or permitting the glass to ccntact.therewith.'-fi a the construction The invention comprises scribed and claimed.

In the drawings Figure 1 represents a plan view of a pair of tongs embodying the invention, and; illustrating a glass pot held therein; Fig. 2 is an edge view thereof; Fig. 3 is a detail section taken on the line 3-3, Fig. 1; Fig. 1 is a similar view taken on the line i -4, Fig. 1; Fig. 5 is aside elevation ofthe melting pot; Fig. 6 is a sectional elevation of a glass furnace,showing the manner in which the tongs are used;

and Fig. 7 is a deta l view illustrating a modification. 1

In my companion application, filed of even date herewith, Serial No- 757,899, I have described, illustrated and claimed a method of handling glass, which method consists in melting down the glass in a large tank, reservoir or furnace, and removing it therefrom in batches by means of a pot supported by a pair of tongs, and with which'the pot is thrust into the furnace and the molten glass dipped up thereinto. The pot with the molten glass contained therein, and supported in said tongs, is then transported to a second or tempering furnace and later removedtherefrom and the glass poured. The prese t inventionhas particular relation to the tongs described and used in connection with said method.

Specification of Letters Patent.

E. -KAPTEINA,

surface of the melting pot 4 beneath and filled with andemptied-of molten hereinafter -de- .As illustrated in the drawings, thetongs it is provided with one or more cross barsor other suitablehandles 2, by means of which the tongs and Patented Dec. 15, 1914. Application filed March 31, 1913. Serial No.'757,898.

the ;pot supported therein may be manipulated: At its other end, the

bar or rod 1 is'oifset, and curved to one side to form, ajaw 3, which fits and embraces substantially one-half of 'ahorizontal bead or frib thereon shown in Fig. 5. The location of thisbeador rib determines thevamount ofglass which may be scooped up with the. pot .-.without submerging any portion v.of thetongs; which amount increases as the head is placed nearer the upper edge .of the pot.

lever 6, having'an'inner end portion 7 which forms a jaw to cooperate with jaw ,3 and is to the bar or rod 1,

the curved outer .The extreme end 5 of aw v3 extends slightly beyond a line arranged'to contact with the melting pot 4;:

on the same side of the axis of the bar- 1, as the end'portion 5 ofjaw 3. At-its outer end arm or lever. 6is provided with an eye or loop 8 having secured thereto one'end of ashort chain or flexible? securing member v9, having a pin 10 on its other end adapted to be secured in one of a number of apertures '11 in a sideplate '12 secured to bar 1 other suitable locking means may of course beused. Intermediate its ends the bar or rod 1 is provided with a collar or sleeve 13, rigidly secured thereto, and provided with a hook to. lock the tongs in closed position. Any

or eye 14, by means of which the tongs and the pot carried thereby may be supported from a rope or cable .15 secured to a car or carrier 16 traveling along an overhead track 17 The arm or lever 6 may be pivotally connected to the bar or rod 1 in any desired manner, such as by means of the pivot pin 20, as in Fig. 7. Preferablyfhowever, the bar 1 is slottedor split at or near the point where thejaw 3 is offset therefrom, as at 21, and the arm or lever 6 projects through said slot and is provided on the opposite sides t permit a large. and heavy pot to the form just described, the pivot is floating,

as there is no positive pintle or pin about" which the arm or lever 6 rotates.

In use of the tongs, the securing pin 10 is released from the aperture 11 to open jaw 7 of the tongs. The tongsare then placed in position around the pot 4 while the latter is lying in a heating furnace, and are secured rigidly in fixed position thereupon, by inserting the pin 10. into one ofthe apertures 11. The end 5 of jaw 3 and the jaw? are both on the same side of the. axis of bar 1, and consequently the tongs embrace the melting pot for slightlymore. than half its circumference, thereby. preventing it from escaping. from'the'tongs. When the pot has been. grasped and secured scribed,the pot is. withdrawn from the furnace and the car 16 is run along the track 17 to bring the. device in front ofthe melting furnace 25, which is provided with a door26 and 'a hearth 27 which holds the mass of molten glass. The pot carried by the tongs is thrust into the melting furnace and a batch of glass dipped up therewith. This is accomplished by slowly submerging. the free edge of the pot beneath thesurface of the molten glass. This is accomplished by a gentle scooping motion in the manner shown in Fig. 6, withoutallowing the tongs to dip into the molten glass, thereby pre-' venting the glass from being contaminated. hen the pot has been filled or it is withdrawn by the tongs from the furnace and is transported along the track 17 to another or tempering furnace, or to the casting table, as described in my application, above referred to.

The tongs. described are comparatively simple and are so arranged as to firmly and securely hold the pot without permitting the same to escape therefrom.

be manipulated by only. one or twomen, as the bar 1 in the manner de-.

partly filled,

co-pending They. also can be. madeas long as desired to. secure more or. less leverage."

What I claim iszll Al pair of tongs for holding and supporting glass pots, comprising a bar or rod provided with an operating handle at one end, the other end of said bar or rod being o'fiset and curved to form a jaw adapted to embrace substantially one-half the circumference of the pot, said bar intermediate its ends being slotted, and a second barprojecting through said. slot and provided with.

pro ections on the opposite sides of said first named her or rod, one end ofsaid second named bar. forming. a short jaw to cooperate with said curved jaw, the other end ofsaid second named bar being provided with an eye, andv a flexible member for connecting. said eye to the first namedbar or rod for clamping said jaws around the pot. 2. A pair of tongs for holding andsupglass pots, comprising a bar or rod porting provided with a transverse handle at one end, the other end ofsaid bar or rod being.

to. form a jaw adapted to offset and curved embrace substantially one-half the circumference of the pot, said bar intermediate its ends being slotted, and. a second bar projecting through said slot and provided with projectionson the opposite sides of said first named baror. rod, one end of said second named bar forming. a. jaw to cooperate with said curved jaw, the other end of said second named bar being provided with. an. eye, a flexible member for connecting. said eye. to the firstnamed bar or rod'forf clamping said jaws around the pot, and means rigidly secured to saidbar. intermediate its ends whereby said tongs may be suspended.

In testimony whereof, I have hereunto set my hand.

JOHN E. KAPTEIN A. Witnesses ELBERT L. HYDE, WVILLIAM B. Wrnin'roic.

.- Copies of this patent may be obtained for five cents each, by addressing: the Commissioner of" Patents, Washington, I). (3. 

